keep dreaming bro itachi(healthy) on a whole other level we haven't even seen him fight in healthy state im sure but the only one who would be a match for them is naruto. itachi would disable most of them naruto will tell the ones that are good at medical ninjutsu to fall back and heal the ones that are down, naruto and probs shikamaru, kiba, shino and chouji would be still able to fight, shikamaru would run out of chakara tryna catch him with his SP while tryna find out a plan to beat him, but then itachi WOULD OUT SMART him and probs put him under tskuyomi, set all of shino's bugs on fire with amaterasu, chouji would then try ambush from the air with the expansion ball jutsu thingy and boom susanoo arm catch chouji and slam him to the ground another one bites the dust, and then kiba tries to ambush too with fang over fang then another susanoo arm comes out and slaps them together and 2 down, then finally catches shino and whacks him in the back of the head because hes too fast.
In the end it would always be left down to naruto because everyone else is to weak